a 2003 document whose - Institute for Simulation and Training ...

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Section 11
Entity Management family
The format of the Grouped Entity Description record 6 - Enhanced Rotor Wing Aircraft shall be as
shown in Figure 11-3-6.
Figure 11-3-6⎯Grouped Entity Description record 6 - Enhanced Rotor Wing Aircraft
Grouped Entity Description record 5 - Basic Rotor Wing
Aircraft
Supplemental Fuel Status 8-bit unsigned integer
Air Maintenance Status 8-bit unsigned integer
Primary Ammunition 8-bit unsigned integer
Secondary Ammunition 8-bit unsigned integer
Grouped Entity Description record 6 - total Size = 224 bits
11.3.3.7 Grouped Entity Description record 7 - Basic Fixed Wing Aircraft.
The specification of entity state information about an individual entity within a group of fixed wing
aircraft shall be represented by a Grouped Entity Description record 7 - Basic Fixed Wing Aircraft.
The Grouped Entity Description record 7 shall contain the following fields:
a) Entity Identifier. Each entity within a group shall be assigned an entity identifier unique
within that group. The Site Identifier and Application Identifiers shall be the same as
those designated in the Group Entity ID field, and shall not be transmitted. The Entity
Identifier shall be represented by a 16-bit integer.
b) Entity Location. Location of a grouped entity shall be specified by a set of three offsets: xoffset,
y-offset, and z-offset. These offsets shall be determined by the difference, in meters,
of the grouped entity from the Group Reference Point. Each offset shall be represented by
a 16-bit signed integer.
c) Entity Appearance. Appearance of a grouped entity shall be identical to that specified by
an Entity State PDU Appearance record. This record shall be defined as a 32-bit record of
enumerations (see 5.2.12 in IEEE Std 1278.1-1995). Values for the fields contained in this
record are defined in Section 4 of this document.
d) Entity Orientation. Orientation of a grouped entity shall be specified by three Euler
angles, psi, theta and phi, in 25 milliradian increments. Each angle shall be represented
by an 8-bit signed integer.
e) Fuel Status. Fuel Status of a grouped entity shall be the amount of primary fuel
remaining. Fuel Status shall be specified in natural units of the specific system, and
shall be represented by an 8-bit unsigned integer.
f) Movement Direction. Movement Direction shall be specified as a horizontal and a vertical
deviation from the Entity Orientation. Each deviation shall be specified in 25 milliradian
increments, and shall be represented by an 8-bit signed integer.
g) Movement Speed. Speed of a grouped entity shall be a signed magnitude value of the
entity’s absolute velocity vector. A negative value shall indicate that the entity is moving
backwards. Movement Speed shall be specified in 0.1 meter per second increments, and
shall be represented by a 16-bit signed integer.
The format of the Grouped Entity Description record 7 - Basic Fixed Wing Aircraft shall be as
shown in Figure 11-3-7.
Figure 11-3-7⎯Grouped Entity Description record 7 - Basic Fixed Wing Aircraft
Entity ID Entity -16-bit unsigned integer
x-Offset⎯16-bit signed integer